Metall. Res. Technol.
Volume 116, Number 2, 2019
|Number of page(s)||8|
|Published online||08 February 2019|
Aluminium grain refinement by Ti(C, N) nanoparticles additions: principles, advantages and drawbacks
College of Materials Science and Engineering, Sichuan University,
Chengdu, PR China
2 State Grid Sichuan Electric Power Research Institution, 610041 Chengdu, PR China
* e-mail: email@example.com
Accepted: 16 August 2018
Ti(C, N) is a ceramic particle with high melting point, high hardness, high thermal and chemical stability. And incorporated Ti(C, N) particles is demonstrated to refine the grain and improve the mechanical properties of aluminium and its alloys. In this article, effects of the addition amount of Ti(C, N) particles on grain refinement and mechanical properties of aluminium alloy are reviewed, and the mechanisms of aluminium alloy refined by Ti(C, N) are described. In addition, due to the poor wettability of Ti(C, N) nanoparticles with aluminium alloy melt and the large specific surface area of Ti(C, N) nanoparticles, the Ti(C, N) nanoparticles are prone to aggregate in molten aluminium, which severely limits the application of Ti(C, N) in aluminium alloy. And effective approaches to improving the wettability of Ti(C, N) nanoparticles refine aluminium alloys are provided.
Key words: Ti(C, N) / aluminium alloy / grain refinement / refinement mechanisms / wettability
© EDP Sciences, 2019
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